> Correction: `(length fn-names)` should be `(length (member name
fn-names))` to handle the possibility of multiple references to the same
footnote.
I made a few more changes to fully handle the multiple references to the
same footnote case. The missing footnote case is also easily handled at the
point of the call to hash-ref.
(define fn-names null)
(define (fn name-in)
(define name (format "~a" name-in))
(set! fn-names (cons name fn-names))
`(sup (a ((href ,(string-append "#" (fnref-id name)))
(id ,(string-append (fn-id name) (number->string (count (curry
string=? name) fn-names)))))
,(format "(~a)" (+ 1 (index-of (remove-duplicates (reverse
fn-names)) name))))))
(define fndefs (make-hash))
(define (fndef name . xs) (hash-set! fndefs (format "~a" name) xs))
(define (footnote-block)
(define note-items
(for/list ([fn-name (in-list (remove-duplicates (reverse fn-names)))])
`(li ((id ,(fnref-id fn-name)))
,@(append
(or (hash-ref fndefs fn-name #f) '((i "Missing.")))
(for/list ([fref-num (in-range (count (curry string=?
fn-name) fn-names))])
`(a ((href ,(string-append "#" (fn-id
fn-name) (format "~a" (+ 1 fref-num))))) "↩"))))))
`(section ((class "footnotes")) (ol ,@note-items)))
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